If one of the two Eigenvalues of a matrix $\left[\begin{array}{cc}3 & 2 \\ 2 & 1\end{array}\right]$ is 4.236 , then the other Eigenvalue (round off to 3 decimal places) is
If one of the two Eigenvalues of a matrix $\left[\begin{array}{cc}3 & 2 \\ 2 & 1\end{array}\right]$ is 4.236 , then the other Eigenvalue (round off to 3 decimal places) is